Input Grams(g):
    <input type="text" name="grams" id="grams"><br>
    <br>
    <button type="button" onclick="kilo()">Kilogram</button>
    <p id="convert"></p>
    <script type="text/javascript">
        function kilo(){

        }

Input Grams(g):
    <input type="text" name="grams" id="grams"><br>
    <br>
    <button type="button" onclick="kilo()">Kilogram</button>
    <p id="convert"></p>
    <script type="text/javascript">
        function kilo(){

        }

• javascript
• html

• 2 multiply by 1024 – Jaromanda X Commented Mar 27, 2017 at 3:45
• 4 no, wait ... 1000 – Jaromanda X Commented Mar 27, 2017 at 3:46
• @JaromandaX Seriously? I think you confused with Kilobytes, is it. – Shubham Khatri Commented Mar 27, 2017 at 3:47
• Divide by 1000. If you convert grams to kilograms you divide by 1000 (eg, 15g = 0.015Kg). If you convert kilograms to grams you multiply by 1000 (eg, 15Kg = 15,000g). – Gerardo Furtado Commented Mar 27, 2017 at 3:49
• @JaromandaX i mean in my question is if the user input a grams by clicking the button of kilograms the amount will appear.. – Cheska Montemayor Commented Mar 27, 2017 at 3:54

2 Answers 2

Input Grams(g): <input type="text" name="grams" id="grams">
<br>
Results: <p id="convert"></p>

<button onclick="kilo()">Kilogram</button>

<script type="text/javascript">

    function kilo() {
        document.getElementById('convert').innerHTML =
            (document.getElementById('grams').value/1000 + "kg");
    }

</script>

var ratio = 1000;

function kilo(grams) {
    return grams / ratio ;
}